This is working OK for me. Try running the database upgrade to make sure that the database is up to date. If it is, then it may be a plugin that is causing the issue. It is worth disabling all plugins temporarily to check. Also, make sure you have no errors around the time it occurs in your apache or cacti logs.

It appears to be an issue with Thold causing this. I will take a look if I get a free moment (been a bit busy lately). Also an issue with thold throwing an error if the device host template doesn't have a threshold template assigned.